AZ-700 Question 20
Single answerYou are deploying a mission-critical web application on an Azure VM that requires a stable public IP address and advanced protection features. Which configuration should you choose to ensure the IP address does not change after redeployments while providing built-in DDoS protection?
- A
Create a Basic SKU public IP address with Dynamic allocation.
- B
Create a Standard SKU public IP address with Dynamic allocation.
- C
Create a Basic SKU public IP address with Static allocation.
- D
Create a Standard SKU public IP address with Static allocation.
Show answer and explanation
Correct answer: D
Explanation
For critical applications, a Standard SKU public IP address with Static allocation is recommended. This configuration ensures a consistent IP address is retained under redeployment or resource changes, and it includes enhanced DDoS protection. Refer to Microsoft� documentation on Public IP addresses (https://learn.microsoft.com/azure/virtual-network/ip-services/public-ip-addresses) for best practices and details on SKU differences and allocation methods.
- A. Incorrect.
Option 1: Basic SKU with Dynamic allocation does not guarantee a consistent public IP address after re-deployment, and the Basic SKU does not include advanced DDoS protection features.
- B. Incorrect.
Option 2: While the Standard SKU does offer advanced features, Dynamic allocation may change the public IP address if the resource is deallocated or redeployed, which is unsuitable for mission-critical applications requiring a stable address.
- C. Incorrect.
Option 3: A Basic SKU public IP address can be statically assigned, but it lacks the built-in advanced DDoS protection available only with Standard SKU. It's less ideal for critical production workloads.
- D. Correct.
Option 4: Standard SKU with Static allocation ensures the IP address remains the same even if the VM is redeployed. It also provides advanced threat protection features such as enhanced DDoS protection, making it the recommended choice for production environments.